tetragonal

1. (Chemistry) crystallog Also: dimetric relating or belonging to the crystal system characterized by three mutually perpendicular axes of which only two are equal

2. (Mathematics) of, relating to, or shaped like a quadrilateral

teˈtragonallyadv

teˈtragonalnessn

te·trag·o·nal

(tĕ-trăg′ə-nəl)

Relating to a crystal having three axes, two of which are of the same length and are at right angles to each other. The third axis is perpendicular to these. The mineral zircon has tetragonal crystals. See more at crystal.

Because of the body-centered tetragonal lattice of S-Sn unit cell, the mechanical properties of the one-grain Sn microbumps are remarkably anisotropic, which are proved by the difference of the elastic modulus and the stiffness in the different orientations.

As an example, zirconia ceramics such as 3Y-TZP (3 mol % Yttria-stabilized Tetragonal Zirconia Polycrystals) offer unsurpassed mechanical properties but are also the most opaque of all-ceramic materials currently available [5].

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